hi i dont want to set alarm bells ringing but i have discovered this dated june 2008 how relevant it is today im not sure.
:-Do Not Use 6-OXO and 1-AD Dietary Supplements By ErgoPharm / Proviant Technologies, Health Canada Advisory.

OTTAWA - Health Canada is warning consumers not to use the dietary supplements 6-OXO (4-androstene-3,6,17-trione) and 1-AD (1-androstenediol), or any other supplements containing the ingredients 4-androstene-3,6,17-trione or 1-androstenediol, due to potentially serious health risks such as seizures and blood clots in the brain that can lead to disability.

Both 6-OXO and 1-AD are manufactured by ErgoPharm / Proviant Technologies in Champaign, Illinois. They are promoted as dietary supplements for body building, and are not authorized for sale in Canada. Health Canada has received one domestic adverse reaction case report in which an individual with no known predisposing medical conditions developed seizures and blood clots in his brain, associated with the use of 6-OXO and 1-AD.

6-OXO, which contains the compound 4-androstene-3,6,17-trione, is an unauthorized natural health product in Canada. 1-AD contains 1-androstenediol, an anabolic steroid that is regulated as a controlled substance in Canada, meaning it should only be dispensed by prescription and used under the supervision of a health professional. While neither product is authorized for sale in Canada, Canadians can access them over the Internet or purchase them while travelling abroad. The above-mentioned Canadian adverse reaction case involved a consumer who purchased the products in the U.S. and brought them into Canada through personal importation.

Consumers using 6-OXO, 1-AD, or other supplements containing 4-androstene-3,6,17-trione or 1-androstenediol without a prescription, are advised to stop taking the products immediately and consult with a health care professional if they have health concerns. Health Canada is taking action to prevent further importation of 6-OXO and 1-AD into Canada.